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alternative fuel vehicles. governor bob mcdonnell announceed a partnership with two energy company to eventually make the fleet of state vehicles all alternative view. they are working with vehicle companies to lower the cost of alternative fuel vehicles. >>> also new, maryland governor martineau malyea has plans to help prevent massive power outages in the state. according to the "washington post," he will release a report today that proposes a new surcharge. customers would pay an extra dollar or two a month so pepco and other companies have funding available to strengthen the grid. the hope is that crews could complete self years of tree trimming in the next two years. >>> a boil water alert is now in effect after a water main broke tuesday morning. the virginia department of health is advising all residents to boil their water for drinking and other uses until health officials determine the water is safe to drink. tests were conducted and the results should be available by tomorrow. >>> the university of the district of columbia is struggling financially and facing an ann certa
. that is available energy for very heavy rain. you with me? >> i'm with you. >> oat warmer the air, the more water vapor it hold. cold air can't hold a lot of water vapor. the polar regions, i know they are covered in snow and ice but parts of the polar regions only get about an inch of snow a year. cold air can't hold much water vapor at all. they don't get much in wait of rain and/or snow. still following me? >> is that why sometimes when it snows a lot, we all say it feels warmer though. >> he y a -- yes, a whole different question. we have those two principles in place. just because the air is warm or hot though, it does not mean that we've got a lot of moisture. we see that the deserts of the u.s. in the southwest. it is 110 in phoenix but it never rains. so you need a combination. here is what you really want for very heavy rainfall. you want a air mass in place or ingredients for a large temperature gradient. on one side of the front, you might want temperature in the 80s or 90s with a lot of moisture available and on the other side of the front, much cooler air because that cooler air can
. all of this energy and cloud cover continues to kind of make very slow progress to the east. i think the showers will be out of here shortly and then we'll be dealing with cloud cover for our morning hours before we see partial sunshine later today. once the sun starts to break out, we should see our winds shift around. finally after a couple of days after very humid conditions, winds out of the north and west should start to dry things out. things will gradually be getting better. 72 right now in washington. we are at 68 this morning out at dulles. it is very warm, very humid. our dewpoint temperatures right now in the low 70s, so lots of moisture in that atmosphere. here's your forecast for today, gradually improving cloud cover, we'll see some afternoon sunshine with highs back in the low 80s. that's weather. let's do some traffic and get the latest from julie wright. good morning. >>reporter: good morning to you, tucker. eastbound along 66 gridlock with delays coming out of manassas, the crew in sky fox joins us continuing from fair oaks in through vienna, lanes are open, no acc
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